package com.ljx.mapper;

import com.ljx.pojo.UcenterMember;
import com.baomidou.mybatisplus.core.mapper.BaseMapper;

/**
 * <p>
 * 会员表 Mapper 接口
 * </p>
 *
 * @author 李加喜
 * @since 2020-09-29
 */
public interface UcenterMemberMapper extends BaseMapper<UcenterMember> {
    //查询在某一天里面注册的用户数量
    int countRegister(String day);
}
